Bhangachora Shukto aka Bhangachora Torkari is a Bengali no onion no garlic mishmash prepared with several veggies and fish-head along with prawns and small fish (optional).
Panchphoron Powder aka Bengali five spice powder is optional.
You may skip plantain as well.
Mourola mach is optional but gives an amazing flavor to the dish. If available I advise it to use.
I have used the head of a big size Katla Fish. You may use the head of any big freshwater fish.
Green Chili is optional as well.